"Extremely quiet pump. Very easy to setup and it looks good next to my tank."
UNS Blitz Stainless Steel Filter
A functional and aesthetic filtration solution for planted aquariums.
Available in two sizes to accommodate a range of aquarium tanks!
Click here to shop all filtration products!
The Ultum Nature Systems BLITZ is a nano canister filter that is both visually attractive and functional. Sporting a full stainless steel body with matching pipes, the Blitz stainless steel canister filter is durable and built to last. It provides good circulation that is powered by a quiet, powerful pump. This filter is simple to install and can be disassembled easily for maintenance. Filtration is crucial for aquarium success and contributes to a healthy and balanced ecosystem.
What we like about Ultum Nature Systems Blitz Stainless Steel Filter:
Sleek design
Silent operation with high flow rates
Easy setup and maintenance
Flexible media selection
Color: Stainless Steel
Includes:
Canister Filter
Inflow Pipe
Outflow Pipe
Clear Tubing
USB Power Cable
Installation Tool
Foam Stabilizing Mat
Hose Clamps - 32oz. model only. Installation is required if using alternative filter tubing.
Model Specifications
| Model & Dimensions |
Suggested Tank Size (GALLONS) | Max Flow Rate (GALLONS PER HOUR) | Tank Recommendations |
|---|---|---|---|
| 6OZ. 3.44 X 2.95 X 5.91IN |
up to 2.6G | 15 |
Ultum Nature Systems 5N Ultum Nature Systems 30C |
| 32OZ. 4.72 X 5.51 X 8.66IN |
up to 12G | 55 |
Ultum Nature Systems 45U |
Additional Specifications 6OZ:
- Chamber Capacity: 0.05 GAL
- Max Lift: 20IN
- Power Specifications: 5V 1A USB
- Power Consumption: 2W
- Build: Stainless Steel & ABS
*Filter circulation flow rate and power consumption were measured based on water outlet at 19.7IN in height*

Additional Specifications 32OZ:
- Chamber Capacity: 0.26 GAL
- Max Lift: 79IN
- Power Specifications: 12V 1A
- Power Consumption: 5W
- Build: Stainless Steel & ABS
*Filter circulation flow rate and power consumption were measured based on water outlet at 78IN in height*

Going With the Flow—or Against the Current? Aquarium Filtration 101
A smaller hang-on-back aquarium filter is a great choice for nano tanks
Larger canister filters provide flexible, customizable flow options and a cleaner aesthetic for all aquariums
Why is better flow and circulation important?
Aquario Inflow and Outflow pipes positioned in the most optimal corner of aquarium for efficient flow. Notice the water ripples that provide visual indication of full circulation.
Accessorized Aquario Neo Flow outflow to create gentler flow for Betta Fish
A canister filter can be used on even smaller nano aquariums. This one is a 6 gallon tank equipped with an Ultum Nature Systems Delta 30.
Other benefits of getting a large aquarium filter
A 2 gallon cube aquarium with an HOB filter
A smaller 1 gallon cube shrimp tank with a canister filter
Two HOB filters to create a complete circular flow in a shallow aquarium, but the greatest visually.
A similar sized aquarium with a cleaner look and stronger flow from a canister filter
How often do I need to clean my aquarium filter?
Reviews by real customers
Overall rating: 5.0 / 5 from 5 reviews.
AI Generated Review Summary
Summary topics
Review topics: [filter].
Review highlights
Reviews
Received
"Perfect for my Nano tank"
Uns blitz is great
"The product works great really easy to set up"
Love this tiny filter
"Very versatile for its size"
Uns blitz 32oz is silent
"I absolutely love this product. It’s very sleek. This filter is almost 100 percent silent. I have to out my ear up to the pump to even hear anything. It’s working great on my uns 5 gallon tank."
Q&A
Shipping, Returns and Refunds
Shipping
Orders are typically processed within 1-2 business days M-F. However, additional time may be required during peak seasons and federal holidays. For orders containing live plants, we exercise extra caution and assess factors such as travel distance and weather to ensure safe transit.
To avoid delays, please ensure all order information is accurate and complete. We cannot offer refunds and are not responsible for orders shipped to incorrect addresses due to errors in provided information. Once an order has been shipped, delivery times are determined by the carrier and are outside of our control. On average, shipments arrive within 2–5 business days, excluding weekends and holidays. For more information, please visit our FAQ page.
Returns
If you are not satisfied with your purchase, please contact us within 48 hours of delivery. Approved returns must be shipped back within 14 days of approval. Returned items must be unused, unopened, and in their original packaging. Specific return requirements, if applicable, will be listed on the product’s page. For more information, please visit our FAQ page.
Refunds
No worries, we’ll take care of everything as long as it fits the guidelines above.Most answers to general questions can be found on our FAQ page.